Malicious PDF — malware analysis report

Static analysis result for SHA-256 20583416284d159d…

MALICIOUS

PDF

382.3 KB Created: 2022-03-20 01:25:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-20
MD5: 317b76172d9d32fadac88f4f859a43fc SHA-1: 8a646fceabf48150424a3ef7c6461a9f463db7e7 SHA-256: 20583416284d159d600e24a6b426b6fa4f8bc8ca7788608bc306488054be5c86
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7525

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://tekdalyapi.com/upload/ckfinder/files/remelakoje.pdf In PDF document text
    • http://deleersnijder-bocaege.be/images/file/11917716255.pdfIn PDF document text
    • http://gonuldoviz.com/upload/ckfinder/files/fodubodolofidunifan.pdfIn PDF document text
    • https://olterus.org/contents/files/nirozazedagabut.pdfIn PDF document text
    • http://csc0731.com/userfiles/file/20220215102119_a9wejl.pdfIn PDF document text
    • http://submission.jpvm.kr/pds/userfiles/files/zatipiwifirepumixi.pdfIn PDF document text
    • http://lungshingcentre.com/userfiles/tudadonoredozotigajami.pdfIn PDF document text
    • http://signika.pl/Upload/file/vokifok.pdfIn PDF document text
    • http://nijiclothing.com/assets/ckeditor/kcfinder/upload/files/37857330334.pdfIn PDF document text
    • http://loaamtran.vn/files/usersfiles/files/witirinosuzozunidev.pdfIn PDF document text
    • https://smilaxlabs.com/userfiles/files/58947003449.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16212e9646074c---13447167299.pdfIn PDF document text
    • http://gardens-spa.com/user_pict/file/donijijixugewovimupife.pdfIn PDF document text
    • http://tygodnikzuzlowy.pl/ckfinder/userfiles/files/70920701977.pdfIn PDF document text
    • http://popmetre.com/news/files/zetagi.pdfIn PDF document text
    • https://jewfri.kr/files/image/files/timok.pdfIn PDF document text
    • http://qapoll.com/2015/vat/upload/files/65608251543.pdfIn PDF document text
    • http://sportsgarten.com/editorData/file/vevuzegufepofamurag.pdfIn PDF document text
    • http://wedooverseas.com/userfiles/file/21316746815.pdfIn PDF document text
    • https://rozetki.moscow/kcfinder/upload/files/jusaz.pdfIn PDF document text
    • http://szm.hu/userfiles/file/torororewobezo.pdfIn PDF document text
    • https://forumsevens.com/images/file/pinidufaziporumisatefe.pdfIn PDF document text
    • http://studiomanzella.com/userfiles/files/34662340066.pdfIn PDF document text
    • https://yubit.co.za/XSRYdR1H?utm_term=medical+website+templates+free++responsivePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00058864.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00058864.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58864 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00059f7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59F7F 18736 bytes
SHA-256: e512c74221ab2cc03209ef17bdf1abb218472e5c1dd23da8d9f9a97d640c41c0
font_02_sfnt_off0005d02c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D02C 11068 bytes
SHA-256: 47cc833920eba0a756ecca6c5cb9c74838af1dd15e097d0ef4cc0e6acfbd7df2